hassle vs problem

hassle

noun
  • Trouble, bother, unwanted annoyances or problems. 

  • A fight or argument. 

  • An action which is not worth the difficulty involved. 

verb
  • To engage in a mock dogfight. 

  • To pick a fight or start an argument with. 

  • To trouble, to bother, to annoy. 

adj
  • hassling; hasslesome 

problem

noun
  • A difficulty that has to be resolved or dealt with. 

  • A puzzling circumstance. 

  • A set of moves required to complete a climb. 

  • A question to be answered, schoolwork exercise. 

  • Objection. 

  • Difficulty in accepting or understanding or refusal to accept or understand. 

adj
  • Causing a problem; problematic; troublesome. 

  • Difficult to train or guide; unruly. 

How often have the words hassle and problem occurred in a corpus of books? (source: Google Ngram Viewer )